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Grantham, NH ZIP code

The ZIP code for Grantham, New Hampshire is 03753. It is in Sullivan County.

Population in these ZIPs
3,509
Avg. median income
$106,300population-weighted
Typical home value
$503,200population-weighted
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ZIP codes within 10 miles

Grantham, NH ZIP code list

Grantham, NH ZIP codes
ZIP codePopulationMedian incomeTypical home value
037533,509$106,285$503,200

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

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Frequently asked questions

What is the ZIP code for Grantham, NH?

The ZIP code for Grantham, NH is 03753.

What county is Grantham, New Hampshire in?

Grantham ZIP codes are in Sullivan County.